Abstract
Acceleration control of turbofan engines is conventionally designed through either schedule-based or acceleration-based approach. With the widespread acceptance of model-based design in aviation industry, it becomes necessary to investigate the issues associated with model-based design for acceleration control. In this paper, the challenges for implementing model-based acceleration control are explained; a novel Hammerstein-Wiener representation of engine models is introduced; based on the Hammerstein-Wiener model, a nonlinear generalized minimum variance type of optimal control law is derived; the feature of the proposed approach is that it does not require the inversion operation that usually upsets those nonlinear control techniques. The effectiveness of the proposed control design method is validated through a detailed numerical study.
Funding statement: Funding: We are grateful for the financial support of the Natural Science Foundation of Jiangsu Province (No. BK20140829); Jiangsu Postdoctoral Science Foundation (No.1401017B), and NUAA Fundamental Research Found (No. NS2013020).
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